Optical member, illumination device, and image projection device

Abstract

Provided are an optical member, an illumination device, and an image projection device capable of uniformly irradiating a limited display region with irradiation light and increasing the use efficiency of the irradiation light. An optical member (100) includes: a reflecting portion (10) including a reflecting surface (12) formed on an inner surface thereof and having a light incident port (17) opened at one end of the reflecting surface (12) and a light emission port (16) opened at another end of the reflecting surface (12); and a lens portion (20) disposed at the light emission port (16) of the reflecting portion (10), in which the lens portion (20) includes a central region (21) positioned at a center and a peripheral region (22) provided around the central region (21), and an optical power of the central region (21) is larger than that of the peripheral region (22).

Dependencies are inferred from the claim text.